Showing papers on "Frustum published in 1975"

Lockring tube joint

Abstract: A lockring tube joint, including an inner and an outer axially overlapping tube member, and a lockring having internally an initial cone frustum zone joined at its smaller end to a cylindrical zone, and a subsequent cone frustum zone joined at its larger end to the cylindrical zone; the tube members being dimensioned to undergo corresponding radial compression in the regions of the cone frustum zones upon assembly of the lockring thereon. Other embodiments of the lockring being provided with additional cone frustum zones and cylindrical zones, and other embodiments of the tube members having localized ribs to provide corresponding localized constriction for increased bonding and sealing engagement between the tube members.

Method for the preparation in a continuous way of water/oil emulsions and apparatus suitable therefor

Abstract: An oil in water emulsion is prepared as a continuous process by causing a stream of water to flow through a duct containing a Venturi providing a converging frustum of a cone zone, a diverging frustum of a cone zone and a central zone joining the two frustum of a cone zones, so that the stream flows through a zone upstream of the Venturi where it is directed along a helicoidal path through the converging frustum of a cone zone to the central zone, drawing oil for emulsification to the duct at the zone upstream of the Venturi and causing it to flow along a helicoidal path in the same direction as the water to the central zone so that the oil and water mix and emulsify in that central zone, causing the emulsion so formed to flow through the diverging frustum of a cone zone, then causing the emulsion to flow along a helicoidal path of reverse slope, and thereafter discharging the emulsion from the duct.

Behavior of a rigid-plastic cylindrical shell under an external pressure pulse

Abstract: 1. A short shell under moderate load is deformed into a frustum of a cone. 2. A long shell under moderate load also has the shape of a frustum of a cone in the acceleration stage, but in the deceleration stage the shell is divided into two parts by a moving hinge region: the zone between the fixed and hinge regions gradually escapes from the deformation process and the other zone continues in motion in the form of a frustum of a cone. 3. A short shell under heavy load consists in the acceleration stage, of two frustums of a cone separated by a fixed hinge region; in the deceleration stage, the shape of the shell is maintained up to a definite time, but the hinge region, gradually decelerating, moves to the free end of the shell until it stops and the generator becomes straight; at the end of the process, the shell has the shape of a frustum of a cone. 4. A long shell under heavy load is deformed just like a short shell in the acceleration stage, but in the deceleration stage its shape is the same only for certain values of shell dimension and of deformation time.

Stationary guide blade structure for axial-flow type turbo-machine

Abstract: A stationary guide blade structure for installation in the guide blade carrier of a turbo-machine in which one lateral surface of the root portion of the blade lies in a meridional plane and includes an arc-shaped slot by means of which the root portion is fixed in the carrier. The radially outer flank of the slot forms part of the surface of a frustum the axis of which coincides with the axis of the rotor component of the turbo-machine, thus to enable the slot to be machined with a combined side-milling and angle cutter.